Help! Mounting bike chain on huffy beach cruiser

I cant post a pic until I make 10 posts lol
So I have a HUFFY NEL LUSSO and cant mount my chain right I need help asap! Owners manual only mentions the cruiser brake. Damn chain was loose and would fall off too then it finally snapped so I wonder how to properly mount chain without it hitting a bike part. . .🤔😳😫